Added uv to pip install in pipeline

.github/workflows/actions.yaml

@@ -27,7 +27,7 @@ jobs:
           python -m mypy --ignore-missing-imports --follow-imports=silent --no-strict-optional src/nomad_simulations tests
       - name: Build coverage file
         run: |
-          pytest --junitxml=pytest.xml --cov-report=term-missing:skip-covered --cov=src tests/ | tee pytest-coverage.txt
+          pytest --junitxml=pytest.xml --cov-report=term-missing:skip-covered --cov=src tests | tee pytest-coverage.txt
       - name: Pytest coverage comment
         uses: MishaKav/pytest-coverage-comment@main
         with:
@@ -43,12 +43,13 @@ jobs:
           python-version: 3.9
       - name: Build the package
         run: |
-          pip install --upgrade pip
-          pip install build
+          pip install uv
+          uv pip install --upgrade pip --system
+          uv pip install build --system
           python -m build --sdist
       - name: Install the package
         run: |
-          pip install dist/*.tar.gz --index-url https://gitlab.mpcdf.mpg.de/api/v4/projects/2187/packages/pypi/simple
+          uv pip install dist/*.tar.gz --index-url https://gitlab.mpcdf.mpg.de/api/v4/projects/2187/packages/pypi/simple --system
   ruff-linting:
       runs-on: ubuntu-latest
       steps: